Sana expresses a wish to time-travel to Mumbai in the year 2050, but she is killed in an accident before her marriage to Karan.

Dr. Yatinder, Karan, and Sana's siblings, Rahul and Thea, travel forward in time and reach Mumbai in 2050.

After a wild attempt to catch Karan and Ziesha, Hoshi crashes into a nuclear substance truck and dies.

Kapoor later opted out in 2006, due to date and scheduling issues, and was replaced by Priyanka Chopra.

[5] The production budget of ₹60 crores was deemed as an extremely high gamble and risk, for a new genre at that time.

[6][7] Kaurna educator, cultural adviser, and dancer Jack Buckskin performed in the film with Taikurtinna, an Aboriginal dance group.

Two special effects houses – Weta Workshop (New Zealand) and John Cox (Brisbane, Australia) – have won an Academy Award for their work on international projects.

[9] Along with Harman and Priyanka, a robot was seen playing a major role; viewers also get to see a teddy bear, which appears to be more than a toy.

[10][11][12] Priyanka Chopra played a dual role, for which, she had to color her hair twice, once red to portray the girl from the future and then black.

Initially the film was supposed to release on 21 December 2007 but it got postponed to 4 July 2008 due to extensive post-production work.

[1][19] Taran Adarsh of Indiatimes called Harman the new flavour of the season and someone who will have a long stay in Bollywood.

However, an academic article published in 2017 stated that the film's utopian version of Mumbai helps "understand the cultural anxieties about India’s neoliberal future".